9902.15.93 - Used self-operating regulator valves, such valves designed for controlling variables such as temperature, pressure or flow (provided for in subheading 8481.80.90)

This HTS classification, 9902.15.93, pertains to used self-operating regulator valves specifically designed for controlling variables such as temperature, pressure, or flow. These valves are distinguished from general mechanical appliances by their specific function in regulating critical operational parameters. The "used" nature of the goods is a key defining characteristic, indicating that these are not new or reconditioned items but have been previously employed in an operational capacity.

Within the broader context of Chapter 99, this subheading falls under temporary legislation and special provisions. It is important to note that the parenthetical reference "(provided for in subheading 8481.80.90)" indicates that while these are classified under temporary provisions in Chapter 99, their underlying nature as regulator valves aligns them with the definitions found in the permanent structure of HTS Chapter 84. This often signifies specific trade agreement considerations or temporary import restrictions that apply to these otherwise standard mechanical components.

As a leaf node, 9902.15.93 does not have further subcategories. Therefore, classification under this code hinges on meeting the criteria of being a "used self-operating regulator valve" intended for process control. Importers should ensure that the valves are indeed self-operating, meaning they function without external power sources or human intervention to adjust the controlled variable. Documentation confirming the used status of the valves will be crucial for accurate customs declaration.